Help ! Discharge

I had unprotected sex on April 12 , he says he didn’t cum in me but we kept on going for a hour or two so Im very scared I am pregnant. I was supposed to start ovulation on the 15th or so. During the week I’ve been feelings cramps and everything it barely started going away yesterday. I’m worried because I don’t know what this discharge means? Someone help me, I need to know what this means! Thank you!